It will be hitting the steets at the end of March. 2K Australia has been on this project for about 18 months now, we crunched like crazy to get this project where it is (including our content team and some of our programming team spending between three and six months in Boston last year).

Right now I'm working on DLC pack 1 that will be coming out not too long after the initial release.

No need to play the previous games but I would recommend playing the original Bioshock for about an hour or two just to get a feel for the gameplay. Also Bioshock one is easily the better game of the first two story wise.

I played and really enjoyed the first one and have yet to play the second (buying soon). I have pre-ordered Infinite too as it looks to be just awesome. I love the story element in Bioshock and it seems it's still just as great: